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On 11 Mar 2011, an M9.0 earthquake struck Japan offshore, c 70km east of Tohoku at c 15km depth. The shaking lasted over 5 minutes and after c 55 minutes the first Tsunami rolled ashore. The earthquake is claimed to have moved the whole of Honshu island c 2.5m to the east and lowered its northern coastline by an average 0.6m. This was a contributing factor to the overtopping of the protective bunds surrounding the Fukushima Nuclear Power Plant, which subsequently suffered a Level 7 Nuclear Emergency. Japanese and US forces were mobilised in support and the US committed the USS Ronald Reagan to act as an offshore Command Center, refueling point and distribution centre for humanitarian aid supplies. Approx 25 ships. 24000 personnel and 190 aircraft were committed by US Forces. A team of c 150 urban search and rescuers with their dogs from California joined with c 60 rescuers from the UK and conducted operations in Kamaishi and Ofunato looking for survivors until 18 Mar.  |
Units | Login to Edit | |
| Dates | Rotary Wing Aircraft Unit | Models |
| mar11 to may11 |  Marine Medium Helicopter Squadron 265 US Marine Corps | 107M H-46 Sea Knight |
| mar11 to may11 | Helicopter Mine Countermeasures Squadron FOURTEEN US Navy | MH-53E Sea Dragon |
| 13mar11 to may11 | Helicopter Sea Combat Squadron Two Three US Navy | S-70 H-60 MQ-8C Fire Scout |
Ships | Login to Edit | |
| Classes | Ships | |
| Aircraft Carrier (Nuclear Powered) | Improved Nimitz class | CVN-76 USS Ronald Reagan, |
| Guided-Missile Cruiser | Ticonderoga VLS class | CG-62 USS Chancellorsville, CG-63 USS Cowpens, CG-67 USS Shiloh, |
| Guided-Missile Destroyer | Arleigh Burke Flight I class | DDG-54 USS Curtis Wilbur, DDG-56 USS John S. McCain, DDG-62 USS Fitzgerald, DDG-63 USS Stethem, |
| Guided-Missile Destroyer | Arleigh Burke Flight IIA class | DDG-85 USS McCampbell, DDG-88 USS Preble, DDG-89 USS Mustin, |
| Command ship | Blue Ridge class | LCC-19 USS Blue Ridge, |
| Assault Carrier | Wasp class | LHD-2 USS Essex, |
| Landing Ship/Platform Dock | Whidbey Island class | LSD-42 USS Germantown, LSD-46 USS Tortuga, |
| Landing Ship/Platform Dock | Harpers Ferry class | LSD-49 USS Harpers Ferry, |
| Support Ship | Supply class | T-AOE-10 USNS Bridge, |
| Support Ship | Lewis and Clark class | T-AKE-7 USNS Carl Brashear, T-AKE-9 USNS Matthew Perry, |
| Support Ship | Henry J. Kaiser class | T-AO-197 USNS Pecos, T-AO-204 USNS Rappahannock, |
